Casio ClassPad 300 PLUS User Manual page 449

(6) Select line segments AB and DE, enter 90 in the measurement box, and tap the check
box next to the measurement box.
• This fixes the angle between AB and DE at 90
degrees.
(7) Select only line segments DE and DC, and then tap the down arrow next to the
measurement box.
(8) Tap the e icon, and then select the check box to the right of the measurement box.
• This makes line segments DE and DC congruent in length.
(9) Select point E and line segment AB.
(10) Tap [Edit], [Animate], and then [Add Animation].
(11) Tap the screen to deselect the currently selected items.
(12) Select point D.
8-5-5
Working with Animations
A highlighted check box indicates the measurement
is fixed (constrained).
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